The ERS Guild of Gas Fitters Certification Course for New Entrants to the Gas Industry (GGFO Category 3.)

To book or for more information, please contact 0208 544 4574 or email This email address is being protected from spambots. You need JavaScript enabled to view it.
This course programme is designed for new entrants to the gas industry who do not hold a relevant related qualification and have no gas related workplace experience.

The ERS Guild of Gas Fitters Certification Course (GGFO CATEGORY 3) has been especially designed for people who seek to embark upon a career within the gas industry. The aims and objectives are to train prospective new entrants to the national standard of domestic natural gas safety. The flexible and tailored twenty week course (excluding assessment days) aims to provide the individual with the skills and knowledge required to meet the standards of competence directly relating to the ACS domestic natural gas safety curriculum. The course is open-ended to address the differing circumstances and needs of each and every individual. This aspect allows individual students to schedule their course over a period of twelve months or more if required. Upon enrolment students will investigate, discover and learn about the essential aspects associated with the safe delivery, control and use of natural gas in the domestic environment. Students will acquire, develop and apply all the competencies required to safely install and maintain natural gas appliances that include boilers, fires, cookers, water heaters and warm air heaters. To this end students will study all the gas safety issues surrounding the installation and testing of gas pipe work, combustion, gas controls, the provision of ventilation and the installation, inspection and testing of flues.

The course consists of both theoretical and practical instruction in basic gas safety training. Once you have successfully completed the course, you will be awarded 'The Guild of Gas Fitters Certificate' from the awarding body E.R.S. To ensure certification you must, as a minimum, attain the following:
  • 80% attendance over the 20 week training course
  • 100% pass mark on week 21 SUMMATIVE multiple choice open book theory examination (3 x attempts per paper)
  • 100% pass mark on week 22 SUMMATIVE open book practical assessment
  • Completion of the E.R.S portfolio workplace tasks
  • Payment (in full) of ALL course fees

A pre-requisite of the ACS scheme requires all Guild of Gas Fitters trainees to gain at least 25 weeks (approximately 800 hours) gas related work experience working with a qualified and registered gas engineer prior to sitting the final summative assessments. Although the GGFO portfolio task sheets are provided by the centre for recording workplace experience, the training and assessment centre does not arrange actual work placements.

ALL trainee gas operatives are required to complete all of the relevant tasks stated in the issued GGFOD1 portfolio within 12 months of completing the 20 week training course at the gas centre. This portfolio forms the basic hours/weeks workplace experience required to sit the formal GGFOD1 SUMMATIVE ASSESSMENTS.

The Guild of Gas Fitters Certificate certifies that the holder has successfully completed and demonstrated their competence on a basic domestic natural gas safety course only. It does not certify that the holder is qualified or experienced in gas work, plumbing or any other discipline.



Course Content

  • Week 1: Theory and Practice of Gas Installation Pipe work Fittings.
  • Week 2: Theory and Practice of Combustion and Gas Safety Controls.
  • Week 3: Theory and Practice of Flues for Domestic Gas Appliances.
  • Week 4: Theory and Practice of Ventilation for Domestic Gas Appliances.
  • Week 5: Practical Exercise Sessions.
  • Week 6: Gas Safety Regulations - Combustion - Gas Rates.
  • Week 7: Ventilation and Formative Assessment.
  • Week 8: Flues and Formative Assessment.
  • Week 9: Pipesize, Tightness Testing and Purging.
  • Week 10: Gas Safety Controls and Formative Assessments.
  • Week 11: Gas Pipework, Unsafe Situations and Gas Metres.
  • Week 12: Gas Fired Boilers and Formative Assessments.
  • Week 13: Gas Fired Water Heaters and Formative Assessment.
  • Week 14: Gas Cookers and Gas Metres.
  • Week 15: Gas Fires and Formative Assessment.
  • Week 16: Gas Fired Warm Air Heaters and Asbestos Awareness.
  • Week 17: Electrical Isolation and Formative Assessment.
  • Week 18: Central Heating Controls and General Formative Assessment Paper.
  • Week 19: Formative Practical Assessment.

All gas assessments take place within the approved gas assessment centre. All Guild of Gas Fitters trainees are required to gain at least 25 weeks (approximately 800 hours) related work experience prior to booking and attending the formal gas assessments from week 21 onwards.

PLEASE NOTE: All GGFO trainess MUST wait until they have received their GGFO certificate from ERS before they are allowed to book the ACS CCN1 and Appliances assessments.


European Registration Scheme (E.R.S) Guild of Gas Fitters Certificate (GGFOD1)

Attendance/Course Duration

1 day a week for 20 weeks (Monday or Friday option, 8.15am to 4.30pm)

Entry Requirements

There are no formal entry requirements for this course, but a pre-course interview with the course trainer may prove beneficial to allow all parties to evaluate if the course is suitable for the applicant. A reasonable standard of spoken and written English and a basic understanding of arithmetic, would be considered desirable attributes for this course.


The GGFOD1 certificate enables the holder to sit the formal ACS CCN1 and appliances gas assessments. When these assessments are successfully completed the operative can then apply for GAS SAFE REGISTRATION accordingly.

Additional Information

Candidates are asked to bring 2 recent passport size photographs and their National Insurance Number upon attending first day of the course.


Tuition Fee: £1990

Instalment payments are available on this course:-  

  • Weeks 1 to 5 - £500 (to be paid on enrolment)
  • Weeks 6 to 10 - £500 (to be paid before start of week 6)
  • Weeks 11 to 15 - £500 (to be paid before start of week 11)
  • Weeks 16 to 20 - £490 (to be paid before start of week 16)
  • Week 21 GGFO Theory Assessment - £200
  • Week 22 GGFO Practical Assessment - £220
  • Total For Tuition plus week 21 & 22 Assessment - £2410


Followed by ACS assessments to be paid at time of booking:-

  • ACS (2 Day) CCN1 Assessment - £400
  • ACS (1 day) 1 x Appliance (Boilers) - £150
  • Total for ACS Assessments - £550


  • GRAND TOTAL - £2960


Please note: Payment must be received for each section before learner can attend training or assessment.

Course Fees are accurate at time of publication but may be subject to change.


Start Dates:

Monday 20 April

Friday 5 June


Candidates are asked to bring 2 passport size photographs.
To book or for more information, please contact 0208 544 4574 or email This email address is being protected from spambots. You need JavaScript enabled to view it.


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